I know that an alicorn is the symbol of a united Equestria/Everglow and that the Unification blood line is a simple way of becoming an alicorn, but there should be a way for non-sorcerers bloodline trait classes to ascend to becoming an alicorn. Maybe a trial given to you by one of the deities that they will preform a ritual to awaken the blood of the other tribes within you and make you an alicorn. This would be more difficult and most likely be a full campaign arc.Foe example. The queens trial was uniting the different tribes of Everglow into a united people.